af1315c28f
This part of the effort to make all test related pieces into the `test` directory. This helps is excluding test related pieces in a straight forward manner if LLVM_INCLUDE_TESTS is OFF. Future patches will also move the MPFR wrapper and testutils into the 'test' directory.
56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
//===-- Unittests for endian ----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/__support/endian.h"
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#include "test/UnitTest/Test.h"
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namespace __llvm_libc {
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struct LlvmLibcEndian : testing::Test {
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template <typename T> void check(const T original, const T swapped) {
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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EXPECT_EQ(Endian::to_little_endian(original), original);
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EXPECT_EQ(Endian::to_big_endian(original), swapped);
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#endif
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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EXPECT_EQ(Endian::to_big_endian(original), original);
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EXPECT_EQ(Endian::to_little_endian(original), swapped);
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#endif
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}
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};
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TEST_F(LlvmLibcEndian, Field) {
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EXPECT_EQ(Endian::IS_LITTLE, __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__);
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EXPECT_EQ(Endian::IS_BIG, __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__);
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}
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TEST_F(LlvmLibcEndian, uint8_t) {
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const uint8_t original = uint8_t(0x12);
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check(original, original);
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}
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TEST_F(LlvmLibcEndian, uint16_t) {
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const uint16_t original = uint16_t(0x1234);
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const uint16_t swapped = __builtin_bswap16(original);
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check(original, swapped);
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}
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TEST_F(LlvmLibcEndian, uint32_t) {
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const uint32_t original = uint32_t(0x12345678);
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const uint32_t swapped = __builtin_bswap32(original);
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check(original, swapped);
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}
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TEST_F(LlvmLibcEndian, uint64_t) {
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const uint64_t original = uint64_t(0x123456789ABCDEF0);
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const uint64_t swapped = __builtin_bswap64(original);
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check(original, swapped);
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}
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} // namespace __llvm_libc
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